The Li-ion batteries (LIBs) with ultra-fast charge/discharge behavior and long-term cyclic performance are highly desirable for many applications. Herein, the three-dimensional graphene (3DG) with rich surface-pores, which was synthesized directly from Na-reduction of CO₂, was demonstrated as an efficient anode for LIBs. The 3DG anode exhibited a very high discharge capacity of 972 mA h g⁻¹ at 0.2C and an outstanding reversible capacity of 277 mA h g⁻¹ at an extremely high current density of 150C (55.8 A g⁻¹). Furthermore, a discharge capacity of 280 mA h g⁻¹ was obtained after 10 000 cycles at 50C, reaching a high capacity retention of 91.9%. Such an excellent electrochemical performance was attributed to the large specific surface area of 3DG and its rich surface-micropores as well as its numerous oxygen-induced defects. This provides a new door to develop highly efficient electrodes from a greenhouse gas for long-life and ultrafast-charging LIBs.

中文翻译：

---

具有由CO2合成的3D表面多孔石墨烯阳极的超快和超长寿命锂离子电池

具有超快充电/放电性能和长期循环性能的锂离子电池（LIB）对于许多应用来说都是非常需要的。在本文中，直接由Na 2还原CO ₂直接合成的具有丰富表面孔的三维石墨烯（3DG）被证明是一种有效的LIB阳极。3DG阳极在0.2C时表现出非常高的放电容量972 mA hg ^-1，在150C（55.8 A g ^-1）的极高电流密度下表现出出色的可逆容量277 mA hg ^-1。此外，放电容量为280 mA hg ^-1在50°C下经过10 000次循环后，获得的高容量保留率达到91.9％。如此出色的电化学性能归因于3DG的大比表面积及其丰富的表面微孔以及众多的氧诱导缺陷。这为利用温室气体开发高效电极以提供长寿命和超快充电LIB提供了新的机会。